Transitional computer user interface for a display screen



FIG. 1 is a front view of a transitional computer user interface for a display screen showing our new design;

FIG. 2 is a front view of a second image thereof; and,

FIG. 3 is a front view of a third image thereof.

The broken line showing of the display screen, text, bullets, images and lines form no part of the claimed design. 

The ornamental design for a transitional computer user interface for a display screen, as shown and described. 